Fibrous hamartoma of infancy in the genital region is a rare benign fibroproliferative disease typically arising from subcutaneous tissue, particulary in males during the first two years of life. It has a typical histopathologic findings which consists of mature fat cell, immature mesenchymal cell and fibrocollagenous band. It is benign in nature which mostly is cured by local excision and rarely recur. We report a case of fibrous hamartoma of infancy in the prepubic area with its sonographic finding and review of the literature.
Adipocytes ; Hamartoma* ; Humans ; Male ; Subcutaneous Tissue ; Ultrasonography

Mesenchymal hamartoma of the chest wall is a rare tumor with about 53 reported cases in the English literature. We reviewed six chest wall mesenchymal hamartomas in four patients, including two cases with multiple lesions, with specific focus on the radiologic and pathologic correlation. All cases occurred in neonates or infants with ages ranging from seven hours to seven months. They were diagnosed with plain chest radiographs (n=6), ultrasonography (n=2), chest CT scan (n=6), whole body bone scan (n=2) and MRI (n=3). All cases except a small one without cystic change showed the typical features of mesenchymal hamartoma radiographically and pathologically. Radiologically they were well-circumscribed masses with solid and cystic components with multiple fluid-fluid levels in association with single or multiple rib destruction or change. The CT scan showed the typical findings of chest wall hamartoma, and the MR showed heterogeneous signal intensities of the mass on T1- and T2-weighted images. The MR also revealed more concisely a secondary aneurysmal bone cyst formation with multiple fluid-fluid levels on the T2-weighted image. Microscopically, they showed alternating areas of cartilaginous islands and primitive appearing mesenchymal proliferation, which corresponded well with the solid component on the radiologic findings. The areas of bone formation and blood-filled cystic spaces matched the calcified or ossified densities and the cystic components, respectively. A small case without cystic change showed peculiar radiological and pathological findings resembling an osteochondroma. In conclusion, mesenchymal hamartoma of the chest wall in infancy is quite rare and sometimes can be misdiagnosed as malignancy due to the bone-destroying radiographic appearance and the highly cellular and mitotically active microscopic features, unless the radiologists and pathologists are aware of the characteristic clinical, radiological, and pathological findings. Imaging studies can usually make a correct diagnosis with good correlation to the pathologic findings.
Female ; Hamartoma/ultrasonography ; Hamartoma/radiography*e ; Hamartoma/pathology* ; Human ; Infant ; Magnetic Resonance Imaging ; Male ; Mesoderm/ultrasonography ; Mesoderm/radiography ; Mesoderm/pathology ; Radiography, Thoracic ; Thoracic Neoplasms/ultrasonography ; Thoracic Neoplasms/radiography* ; Thoracic Neoplasms/pathology* ; Tomography, X-Ray Computed

The characteristic features of hamartoma in terms of discrepancies in mammographic and sonographic shapes of the mass were evaluated. We reviewed 16 pathologically proven breast hamartomas, which had undergone preoperative mammography and ultrasonography. All masses were analyzed according to ACR-BIRADS on mammography. On sonography, each mass was analyzed for size, shape, margin, internal echogenicity, and posterior acoustic enhancement. We also analyzed the echogenicity of halo, and compared the characteristic changes in the shape of hamartomas attributable to compression in mammograms and sonograms. The most common sites were at 12 o'clock in the right breast and 2 o'clock in the left. The most common mammographic findings of the hamartomas were a round shape (11/16), a circumscribed margin (13/16), internal fat densities (D4) (16/16) and radiolucent halos (14/16). The most common sonographic findings of the hamartomas were an oval shape (16/16), circumscribed margins (10/16), heterogeneous internal echogenicity (14/16), echogenic (7/16) or echolucent halos (5/16), and posterior enhancements (12/16). The characteristic feature of hamartomas was a change of the mammographic round shape mass into an elongated oval shape mass by sonography (11/11), suggesting the compressibility of hamartomas. Three of the hamartomas contained a pathologically proven internal calcification. The presence of a hamartoma was suggested by a change in a mammographic round mass with a radiolucent halo into an oval heterogeneous mass surrounded by an echogenic or echolucent halo on the sonogram. This characteristic difference between the mammographic and sonographic findings was attributed to the hamartoma compressibility, and was associated with the over-proliferation of fat containing mature normal breast tissue.
Adult ; Breast Diseases/pathology/radiography/*ultrasonography ; Female ; Hamartoma/pathology/radiography/*ultrasonography ; Human ; Mammography ; Middle Aged ; *Ultrasonography, Mammary

Authors report the radiologic findings of two cases of multiple bile-duct hamartoma in the liver. Ultrasonography and computed tomography of the liver were performed in two female patients. In one patient, ERCP was performed. Ultrasonography and computed tomography showed scattered multiple hypoechoic and low attenuated lesions, measuring up to 2cm in both lobe and ERCP showed communication of these lesions with the biliary system. Multiple bile-duct hamartoma should be included in the differential diagnosis of multiple small cystic lesions in the liver.
Biliary Tract ; Cholangiopancreatography, Endoscopic Retrograde ; Diagnosis, Differential ; Female ; Hamartoma* ; Humans ; Liver ; Ultrasonography

Breast hamartomas are typically a benign condition and rarely develop into malignant lesions. The coexistence of carcinoma and a breast hamartoma is rare; only 15 cases have been reported in the literature. Here, we report a case of invasive ductal carcinoma associated with hamartoma in a 60-year-old woman. Mammography, ultrasonography and magnetic resonance imaging showed typical features of a breast hamartoma and a suspicious mass with microcalcifications arising within the hamartoma.
Breast ; Carcinoma, Ductal* ; Female ; Hamartoma* ; Humans ; Magnetic Resonance Imaging ; Mammography ; Middle Aged ; Ultrasonography

Von Meyenburg complexes (VMC) have many synonyms such as bile duct hamartomas and biliary hamartoma. These rare benign disorders are considered as congenital diseases caused by malformed differentiation of ductal plate. The diagnosis of VMC by common radiologic modality such as ultrasound and computed tomography was nearly impossible until the emergence of cholangiopancreatography by magnetic resonance imaging (MRCP) and the pathologic examination was the only way to confirm the diagnosis of VMC. But MRCP is now considered as most accurate noninvasive method for diagnosis of VMC. We report a histologically proven case of VMC associated with calculous cholecystitis, cerebral aneurysm and renal cortical cyst. To our knowledge, no comparable case has been reported and this would be the only second reported case of VMC, which was diagnosed by MRCP.
Bile Ducts ; Cholecystitis* ; Diagnosis ; Hamartoma ; Intracranial Aneurysm* ; Magnetic Resonance Imaging ; Ultrasonography

Mesenchymal hamartoma is an uncommon benign tumor usually found in childhood, especially during the first two years of life. The tumor consists of a solid component and multiple cyst. Without treatment, these lesions can grow to an enormous size. We experienced a case of mesenchymal hamartoma which was found incidentally, in a 8 month old girl who had ascending cholangitis after Kasai operation due to biliary atresia. On abdominal ultrasonography and CT, there was a well-defined homogeneous small echogenic mass in the right lobe of the liver with cirrhosis. Five months later, she underwent liver transplantation. Gross picture of the resected liver showed a dark greenish pigmented solid mass in the right lobe of the cirrhotic liver. Microscopic findings showed reactive mesenchyma and epithelial overgrowth.
Biliary Atresia* ; Cholangitis ; Female ; Fibrosis ; Hamartoma* ; Humans ; Infant ; Liver ; Liver Transplantation ; Mesoderm ; Ultrasonography

Hamartoma of the breast is a rare benign lesion presenting as palpable mass. They are, however, sometimes misdiagnosed by pathologist due to their resemblance to other benign or physiologic conditions of the breast. We report two cases of hamartomas of the breast. The clinical diagnosis was fibroadenoma in both cases. One patient was a 49-year-old woman presented with palpable mass for the duration of 5 months. Mammography showed a well demarcated round mass with homogeneous density which is slightly greater than the surrounding glandular tissue. Grossly it was a 3.5 3.0 2.0 cm sized round firm mass covered by thin fibrous tissue. Microscopically it was a well defined mass composed of variable amount of breast lobules, dilated ducts and adipose tissue surrounded by dense hyalinized connective tissue. The adipose tissue accounted for 30% of the entire lesion. Cellular atypism was not found. The other patient was a 18-year-old woman presented with palpable mass of the duration of 3 years, which was increased in size recently. Mammography demonstratesd a well delimited lobulated mass with lucent halo. Ultrasonography showed a well encapsulated low echoic mass admixed with high echoic areas. Grossly, it was a 4.0 4.0 2.0 cm sized well demarcated oval-shaped firm mass with translucent thin fibrous capsule.. Microscopic findings were similar to the former. The amount of adipose tissue was 20%.
Adipose Tissue ; Adolescent ; Breast* ; Connective Tissue ; Diagnosis ; Female ; Fibroadenoma ; Hamartoma* ; Humans ; Hyalin ; Mammography ; Middle Aged ; Ultrasonography

Forty-four cases of abdominal and pelvic computerized tomography (CT) for urological evaluation were reviewed and analyzed as follows: Computerized tomography is a very convenient and non-invasive method to evaluate stages of renal tumor and is more superior in diagnosing hypoplastic kidney and hamartoma than ordinary renal angiography and ultrasonography. Computerized tomography is more informative in evaluation of retroperitoneal space than conventional radiography. It is almost impossible or very difficult to differentiate stage of the bladder tumor A, B1 and B2. Stages beyond C and mass in the pelvic cavity can be detected with relative accuracy. Lymph node metastasis into the retroperitoneal space in testis tumor is diagnosed by computerized tomography.
Angiography ; Hamartoma ; Kidney ; Lymph Nodes ; Neoplasm Metastasis ; Radiography ; Retroperitoneal Space ; Testis ; Ultrasonography ; Urinary Bladder Neoplasms ; Urology*

The discovery of a breast lump is one of the most anxiety-provoking occurrences in a woman's life. The initial purpose of a surgical consultation is to determine whether a true mass exists. The majority of breast masses are self-discovered or are identified by a primary care provider. Once a breast mass has been identified, the first determination to be made is whether it is benign or malignant by using breast imaging techniques or pathologic examination. Once a breast lesion has been shown to be benign on pathologic examination, the most improtant clinical consideration is the risk of subsequent breast cancer associated with that lesion. The diagnosis of a fibroadenoma can be made using excisional biopsy or the combined modalities of CBE, ultrasound, and FNA. A true intraductal papilloma develops in one of the major subareolar ducts and is the most common lesion causing a serous or serosanguinous discharge. A mass may be felt on examination in as many as one-third of cases. The treatment of choice is microdochectomy. Hamartomas can produce a classic mammographic image that is virtually diagnostic. Because the clinical and radiologic characteristics of fat necrosis resemble those of carcimoma in the majority of cases, a needle localization or excisional biopsy is required.
Biopsy ; Breast Neoplasms ; Breast* ; Diagnosis ; Fat Necrosis ; Fibroadenoma ; Hamartoma ; Needles ; Papilloma, Intraductal ; Primary Health Care ; Ultrasonography